reject mixed drive situations with drives on root disks (#11057)
till now we used to match the inode number of the root drive and the drive path minio would use, if they match we knew that its a root disk. this may not be true in all situations such as running inside a container environment where the container might be mounted from a different partition altogether, root disk detection might fail.master
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54d243cd98
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@ -1,62 +0,0 @@ |
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// +build !windows
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/* |
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* MinIO Cloud Storage, (C) 2019 MinIO, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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package disk |
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import ( |
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"os" |
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"syscall" |
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) |
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// IsRootDisk returns if diskPath belongs to root-disk, i.e the disk mounted at "/"
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func IsRootDisk(diskPath string) (bool, error) { |
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rootDisk := false |
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diskInfo, err := os.Stat(diskPath) |
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if err != nil { |
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return false, err |
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} |
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rootHostsInfo, err := os.Stat("/etc/hosts") |
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if err != nil { |
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return false, err |
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} |
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rootInfo, err := os.Stat("/") |
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if err != nil { |
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return false, err |
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} |
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diskStat, diskStatOK := diskInfo.Sys().(*syscall.Stat_t) |
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rootHostsStat, rootHostsStatOK := rootHostsInfo.Sys().(*syscall.Stat_t) |
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rootStat, rootStatOK := rootInfo.Sys().(*syscall.Stat_t) |
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if diskStatOK && rootHostsStatOK { |
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if diskStat.Dev == rootHostsStat.Dev { |
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// Indicate if the disk path is on root disk. This is used to indicate the healing
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// process not to format the drive and end up healing it.
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rootDisk = true |
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} |
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} |
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if !rootDisk { |
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if diskStatOK && rootStatOK { |
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if diskStat.Dev == rootStat.Dev { |
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// Indicate if the disk path is on root disk. This is used to indicate the healing
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// process not to format the drive and end up healing it.
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rootDisk = true |
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} |
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} |
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} |
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return rootDisk, nil |
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} |
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